Odometer



Nov. 13, 1928.

Wvzeaa 1,691,510 A. L.-. BARRETT ODOMETER Filed Aug- 6, 1925 fievenoi r I ing the prefe poacnnsrna, u'asskacnasms,

assioxon' ro sraxnm OOIPA JIY, OF BOXBUBY, MASSACHUSETTS, 1 OQBYORLTIOI OI- ononrrn Application fled Aug-m e, 1925.. Serial m. 48,477.

' The present invention relates to odometers and more particularly todevices for registeringbothtotal'mileag'e and trip mileage and embodied in'a speedometer of the type con- 1wl eriiently mounted on the dash of a' motor ve- 10 e. a g

In devices of this character, it is usual to provide s. manuallyoperated resetting but-ton to reset the tri counter to zero at any desired 10 time, indepen entlj of the indication of the total mileage registen. This button usually appears at the side of "the speedometer, a pos1t10n which is undesirable not, only-because it renders the instrument unattractive but It! also because it'makes for considerable ex- 7 pense in that it requires a hole of irregular shape, ortwo holes, to accommodate both .the speedometer, and the resetting means. a

The object of the present invention is to provide .a simple and attractive odometer which will re" ui're only one hole .for mounting and in .w ich the resetting button may be located within the limits of the casing and 1 preferably symmetrically arranged in the Bl vertical central plane of. the instrument. To

this end, the invention consists in the odometer hereinafter descri it'rfi'the claim; d n e accom. anying rawings i ustratrred form of the invention,

1 1s a front elevation of as eedometer' embodying the features oftheinve'ntion; Fig.-

2 is a section on line 2-1-2 of Fig. 1; and Fig. 3 is a detail view similar to Fig. 2 but showing the resetting means in operation.

The illustrated embodiment; of the.inv'e ntion com rises a speedometer having a casing 4, and a frame B'carrying the speed indicator 8, the-total mileage. indicator and 40 the trip mileage indicator 12. The various.- numerals appear through openings in a; mask 14. and the entire assembly is retained in the -casingbyabez.el16. Y r

X A'dri' 'ng shaft 18whi'ch connects with'one- 46 of the front wheels of the vehicle in the usual manner operates ,the speed indicator 8 and also communica-testhrough a'train of gears with a counter advancing shaft 20 which Q. operates the tenths wheel 22 of the total counter. Loosely. mounted on the shaft 20 is a which is arranged between successive. wheels of both the total and trip counters to advance counter driven throughja connection with the trip counter.

d and particularly dec termediate which constitutes a s n I comprises a button.42 provided with a re- .duced portion 43 received in an o enin of setting button has an internal flange or lip series of sounteradvancing gears 24,1'one of the wheels in the usual manner. The trip.

the total counter and to thisend the units wheel 26 of the total counter is o rativel connected with the shaft 28 on w ich bot' counters are supported, all of theother wheels of both counters being loose on' the shaft. A gear 30secured to the counter su porting shaft meshes with apinion 32 on t e advanclng gear shaft 20 and an adjacent p1n1on 34, a so loosely mounted on the shaft, meshes with the gear of the units wheel of 'An intermediate gear 36 mounted on a shaft 38 normally meshes with both the pinions 32 and 34 so that upon advancement %f the units wheel of the total counter a similar advancement of the trip counter will-take place. It will be seen that the wheel of the total counter which is secured to the shaft 128 will be in the same numerical order as the lowest wheel of the trip counter. Thus, if a tenths wheel were provided for the trip counter,.: it'would be the tenths wheel of the total counter which would be secured to the shaft. r The means for resetting the trip counter comprises, a. manually operated member adapted to disengage the intermediate gear 36 from the pinion 32 and to rotate the ingear independently of the total counter. As shownin Figs. 2 and 3, the frame 6 is provided with a projection 40 pport for the resetting means and which is disposed in the vertical central plane of the instrument below thehorizontal center line. The resetting means the support and having a gear 44 orme on van annular flange, th1s'gear 44 being normally out of engagement with' the intermetdiate gear 36. The }gear 36 is formed wlth a cam surface 46, w ich is normally urged against the support 40 by a coil spring 48,

thus maintaining the gear in engagement with .bothof the pinions 32 and 34. The re- 50'whieh engages with the cam surface 46'of the intermediate gear. In order to effect the setting of the trip counter, the button 42 is depressed, thus moving the gear 36 to the left, as viewed'in Fig. 3, by virtue of the em gagement Ofthali-P 50 with the cam 46, and bringing the, ears 36 and 44 into engagement with each other and at the same time disengaging the gear 36 from the p1n1on 32.

.The gear 36, remaining in engagement with 110 the pinion 34:, is now efiective to cause resetting of the trip counter merely by manual rotation of the button 42. Th1s is entirely independent of any movement 0 the total register and can be erformed while the vehicle is in motion. gpon release of the button 42, the s ring 48 moving the intermediate gear to 1ts normal position also forces the resetting button out into its normal position, as shown in Fig. 2, by virtue of the cam action against the ip 50.

I claim- An odometer having, in combination, a counter supporting shaft, total and. trip counters on the shaft, one of the wheelsof the total counter beingjconnected to rotate the shaft, an advancing gear shaft, twoad- .jacent pinions loosely mounted on the ,vancing gear shafti connections one of the inions an the counter supporting 20 shaft, t e other pinion connecting with the'f trip counter, an intermediate'gear normally meshing with both of the adjacent gears and having a cam surface, a shaft 'on which the intermediate gear is mounted, a resettin 2 button having a gear adapted to engage wi the intermediate gear and provided with a flange to engage with the cam whereby the intermediate gear may be disengaged from the first of said pinions and rotated inde 80 pendently -,of the total counter to reset the trip counter. v

In testimony whereof I have signed my name to this specification.

ALBERT n BARRETT. 

